I like how Yang turned out. I've taken to adding a layer of airbrushed shadow - for the shots I've used it in, it seems to work well... though it looks better on some monitors than it does on others, so I'm not sure if I'll stick with it.

Back when I was building the cube I spent hours on lighting tests, trying to get the indicators to glow in a really specific way. A really specific way that takes about five seconds to do in photoshop - wand, new layer, paint bucket, deselect, blur. It has other, less interesting faces - we'll see them eventually.